Online ISSN: 2521-0246 | Print ISSN: 2523-0573
Volume 2 Number 10 October 2018
Extraction and Visible Absorption of Sorghum Bicolour Dye and Its Fastness Qualities on Textile Substrate in Exhaustion EmersionPages: 71-77
Authors: Nkem A. Udeani, P. M. Dass, Dauda A. Milila
The recent discovery of the harmfulness of synthetic dye on human body and its toxic effects on the skin enhanced the use and intense research on varying natural plants, animals, minerals and insect secretions as colourants for textile substrates. Of all, plants are the most explored and experimented. Sorghum bi-colour (Guinea corn) is one of such plants. In this study therefore, the liquid extract of sorghum bi – colour was optimized using different alkalis and its potentials as fabric dye was analyzed through exhaustion method of hot and cold water using cotton and linen fabrics. Dye characterization was done using spectrophotometer in the range between 460nm to 780nm. Results show that cotton to an extent showed high level of absorbency and hot water extract a better method of dye extraction. The UV reading at 50% dilution showed highest absorbency value of 2.269 at 546nm wavelength. The colours obtained ranged from lilac to brown hues.